Explosive-engine.



R. MbMYERs. ExPLqsrvB ENGINE. .-APPLIOATION FILED DEC. 4. 1907. 91 4,864 Patented Mar. 9, 1909.

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(- Wuaufoz awaz u R. MOMYERS. EXPLOSIVE ENGINE. APPLICATION FILED D30; 4. 1907.

Patented Mar. 9, 1909.

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R, MQMYERS. v EXPLOSIVE ENGINE.

. APPLIGATIOH FILED 1320.4. 1907. 914,864.

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UNITED s'ra'rns PATENT onnicn.

RICHARD McMYERS, OF NEW YORK, Y.

EXPm SIVE-ENGINE Specification of Letters Patent.

Patented March 9,

Application filed December- 4, 1907. Serial No. 405.057.

To all whom it may concern:

. Be it known that I, RICHARD McMYERs, a citizen of the United States, residing at New York, in the county of New York and State of. New York, have invented new and useful 1m rovements in Explosive-Engines, of which t e following is a specification.

This invention relates to internal combustion engines intended more particularly for use in automobiles.

The invention has for one of its objects to improve and simplify the construction and operation of apparatus of this character so Another object of the invention is thepro-- vision of a high powered engine composed of one or more pairs of cylinders having common admission and exhaust chambers and valve-controlled passages between each chamber and cylinder, the valves of the passages being flat and mounted to slide transverselyto the passages for controlling the admission of the charges and the exhaust of the spent gases from the cylinders.

With these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of arts which will be more fully described hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawings, which illustrate one of the embodiments of the invention, Figure 1 is a plan view of the engine with the head portion of one of the airs of the cylinders in horizontal section on Eric 11, Fig. 2. Fig. 2 is a vertical transverse section taken on line 2 2 Fig. 1. Fig. 3 is a front view of the engine showing the parts in section on-the line 3-3, Fig; 1.-

Similar reference characters are employed to designate corresponding parts throughout the several views- Referring to the drawings, 1 designates the crank shaft of the engine which is mounted in bearings 2 in the end of the crank casing 3 and in a central bearing 4 formed in a spider 5 secured to the walls of the casing by b lts 6. shown in Fig. 2. The casingis composed of two sections 7 and 8 divisible in a horizontal plane coinciding with the bearings 2, and the sections are secured together by bolts 9 whereby a liquid ti ght housing is formed for containing lubricant,

if splash lubricant is required. The crank I I shaft in the present instance is of the fourthrow type and arranged with the crank pins disposed ninety degrees apart so as to produce an even torque.

Mounted on the crank casing are twin cylinder castings A and A formed with water jackets 10, whereby the walls of the cylinders are kept at the proper temperature.

four cy inders 14 are, in the present instance,

The

arranged with their axes parallel, and 1'ecip locating in the cylinders are trunk pistons 15 connected by rods 16 with the crank pins of 5 the shaft 1 Each pair of cylinders 1s pro.- vided with a common admission chamber.17

and a common exhaust chamber 18,- and be-- tween the cylinders and chambers are pas-' sages 19 and 20, the passages and compression chambers 21 of the cylinders being separated by a straight, transverse partition 22 extending from the admission chamber to the exhaust chamber 18. Communication between wall of the passage controlled by the valve,

and in the partition 22, and .the valve is adapted to move int9 a pocket 26, formed in the wall above the valve. The pockets are open at the top of the castings A and A and are closed by cover plates 27, and through these pockets, the valves can be removed for repair or inspection. The valves are provided with stems 28 that pass downwardly through the bores 29. I

For operating the valves, two longitudinally extending half speed shafts 30 are mounted in thecrank chamber and these shafts are driven by a pinion 31 on the crank shaft and gear'wheel 32 on the-secondary shafts 30. On the secondary shafts are earns 33 for the admission valves, and 34 for the exhaustvalves. Each valve stem 28 has a removable section 35 that is connected with the upper section by a threaded sleeve or nut 36,

whereby the upper section can be removed.

removed upwardly through the pockets or roller 37 for engaging the adjacent cam 33 and the portion above the roller is formed into a square or non-circular head, as indicated at 38, and reciprocates in a correspond-= ingly shapedhollow guide39 that is screwed into the top wall of the crank casing, as shown in Figs. 2 and 3. On each valve stem is a .valve closing spring 40 which bears at its upper end against a suitable part of'the engine, and at itslower end on a collar 41 which is removably and adjustably held on the upper section of the stem-by a nut 42. This spring tends to hold the valve closed and toreturn the valve after the samehas been open by its respective cam. By screwing thejnut' 36 downwardly oh the upper section of the stem and byunscrewing the nut 42, the valve and its stem can be readily taken out forthe purpose of inspection or repair.

.Any suitable ignition device may be employed for firing the'compressed charges in the cylinders, and in the present instance, the ignition devices B are of the mechanically actuated type and eac includes a swinging arm 43 for actuating he movable electrode (not shown). Engaging each arm 43' is a vertically-extending rod 44 that has its lower end extending into the crankcasing and provided with a roller 45 adapted to be engaged by one of the ignition controlling cams 46, as

shown in Fig. 3. The rods 44 are provided with squared portions 47 that move in guides 48 so as to steady the rods and hold them in proper position.

In; practice, the charges .of mixture are supplied fi'o'm a suitable carbureter to the chamber 17 through the supply pipe 50 Fi 1, while the exhaust products are condiicte d away from the engine through the exhaust pipes 51. After the engine is cranked or started into motion, the movement of the pistons causes the charges of mixture to be drawn into the cylinders and after the first charge is exploded,the engine continues to operate. The valve operating cams and earns for operating the ignition devices are so related to each other and to the movements of "the pistons that the explosions occur in regular order in the successive cylinders and the engine operates on the wellcylin er.

known four-cycle principle.

K ierring to Fig. 2, the operation of'an individual cylinder will be-described. 'The piston ,is represented as having reached the end :of the discharge stroke and the exhaust valve 24 has closed by the action of its spring, it being noted that the cam 34 has passed from under the valve stem. The admission valve 23 is about to be opened by the cam 33 so that as the piston moves downwardl a new charge will be drawn into the As soon as theiston reaches the end of its out-stroke thea mission valve will be closed and on' the succeeding in-stroke the charge of explosive mixture will be compressed for ignition. At about the time the inner dead center is reached, the'charge is exploded so as to give an impulse to the pisapparent to those skilled in the art to which t e invention appertains, and while I have described the principle of operation of the invention, together with the apparatus which I now consider to be the best embodiment thereof, I desire to have it understood that the apparatus shown is merely illustra-' /tive, and that such changes may be made when desired as are within the scope of the claims.

Having I claim is 1. In an engine, the combination of a cyle inder having a passage communicating with the compression space of the latter, said as sage having oppositely-disposed paralle recesses in opposed walls and a pocket arranged between and in line with the recesses, a flat plate-like valve having opposite sides slidably disposed in the recesses and arranged to move into and out of the pocket, a stem con nected with the. valve and extending out of the passage, means for reciprocating the for the walls of the said pocket.

2. In an engine, the combination of a cylinder provided with a passage, said passage "having oppositely-disposed recesses and a pocket arranged in line with the recesses, a flat plate-like valve slidable in the recesses and movable into and out of the pockets for openin and closing the said passage, a removable cover for the said pocket, a stem thus described the invention, what stem, and a water jacket for the cylinderand connected with the valve and provided with g a screw thread, an abutment on the stem, a spring on the stern and bearin on the abutment for holding the valve inc osed position;

a nut on the threaded end of-the stern for adjusting the abutment, a cam shaft, a stem having a non-cirpu jar head adjacent one extremity and threaded at its opposite extremity, a connecting sleeve. screwed on the threaded extremities of the stems for con- 7 necting them to ether, a hollow guide in which the head s idably moves, means, supportinglthe hollow guide, and a roller mounted on t e second stem below the head thereof and arranged to be engaged by the cam shaft:

3. The combination of a paifof cyirnders disposed side by side and having a common admission chamber at one side and a commonexhaust chamber at the opposite side and communicating with the compression spaces of the cylinders;.a wall extending a from one chamber to the other and disposed between the cylinders for separating the compression spaces thereof and-providing passages between the chambers "and compressio'n'spaces, each passage havin parallel recesses in oppositely-disposed wa s, and a pocket arranged between the recesses, there 'eing'an opening in the Wallopposite from RICHARD McMYERS.

\Vitnesses:

' THOMAS JETER,

CHARLES Lnoyrc. 

